Alphonse Leduc - Robert King, Inc is an exclusive North American distributor of Editions Musicales Alphonse Leduc, carrying folloiwng catalogs: Leduc, Hamelle, Heugel, Notissimo, Misterioso, Editions Universelles, Editions Choudens. Also we continue the Robert King historical brass distribution of all available brass sheet music in print (Brass Players Guide). Alphonse Leduc - Robert king, Inc handles both Leduc Group catalogs: sales and rental (sheet music for hire).